Is Your Printer Spying on You?

Description:
October 2005 article about how "the US government has succeeded in persuading some color laser printer manufacturers to encode each page with identifying information," and the implications of this "yellow dot" marking system on privacy concerns. Includes a white paper, directions for printing test sheets, a dot decoding guide, a list of printers that do or don't print tracking dots, and links to more recent information. From the Electronic Frontier Foundation (EFF).